Roof paint



Patented Dec. 2, 1930.

' srA Tss' MICHAEL ivr. GONNOLLY, OPS-HERMAN, oe msonnra.

ROOF new; i l

No Drawing.

' My invention relates to aroof paint of general use but especially intended for application on wood shingles. 1

My invention applies to a mixtureof gasoline and alcohol which makesa complete solvent for coal tar or gas tar as it is sometimes called. This coal tar is derived as a by product of gas. When the gas is made from coal the coal tar is a heavy ropy fluid of liti tle value otherthan a great wood preservative.

I Before the coming of asphalt it .had been used in gravel and all other composite roofing by a heating process. It has also been used as a paint by cutting it with gasoline alone, butsuch is possible only under favorable Weather conditions. But with my for mula of gasoline and alcohol which makes a complete solvent it is entirely dependable in all weather conditions above a freezing tem-' perature. This solvent being volatile it dries out immediately after the paint is spread and leaves the coal tar without any dilutlon.

This coal tar being entirely a mineral prod-' not, like cement concrete, the elements have little or no efiect on it. Therefore along With itbeing the greatest wood preservative, it is also the most lasting paint. Also in proper "solution it enters the wood like linseed oil or creosote, but surpasses either of those by leaving a heavy paint film on the surface.

My invention consists in the composition A. of matter hereinafter described and claimed.

I take coal tar, such as derived'from gas works using coal in the manufacture of illaminating and heating gas, and add to 20 parts of coal tar 5 gallons of gasoline and one gallon 01": alcohol,the parts belng taken by volume. The gasoline and. the alcohol form what is called-a compound solvent having much greater solvent qualities than what would be expected from their separate solvent powers. In place of gasoline turpentine may be used. 7 In taking care of shingle roots, the paint s poured out on the roof and distributed and swept into the cracks with aihouse broom as it runs down (this paint being cheap enough to use it freely). Then all shingles that are curled up, lie down fiat like they do when wet,

Application filed December 11,19281Q aa... 32%.-;es4."j f

theyfnever curl againifa's the ifibre "is "being filled*v'vith something that does not'dry out,

Flooding the roof in this way. causes the paint to flow beneath the shingles, therefore they stick to the wood below, which forms a solid mass of smooth contour exactly resembling a slate root. In tar paper roofs it practically renews the life of the old paper, it being the material the tar paper was originally I made of, also from which it got its name.

With tin roots it coats metal just like japan, tdoes not crack, chip or peel off, it arrests and prevents all further rusting. It is rain- 7 proof. and fireproof, water will not mix with itand flame will not ignite it.

In making the paint it is preferable to preparethis immediatelyb efore using, that is preparing it at the job itself rather than car-j rying the paint in solution already made up.

Therefore the painter when preparing the paint on-the job mixes the gasoline and alcohol in the desired proportions with the desired number of parts of coal tar. This gives a solutionwhich flows sufficiently readily at substantially all temperatures slightly above of solidity to be used when the temperature is low and near the freezing point. Thus my coal tar paint being free flowing at low tem-' peratures is in a proper condition for use When most peoplerequire their roofs to be repainted, which is in the fall of the year when the temperature is dropping and when the morning and evening temperatures are cool. It 18 known that coal tar when the temperature of the air ishigh, Will be free flowing sufficiently for some types of roofing work,

- but myinvention is intended to give a solution which will be free flowing at all temperatures above freezingat which'work can be carried Another factor of my coal tar paint using gasoline and alcohol as a solvent, is that the solvent, that is the gasoline and alcohol both evaporate leaving the coal tar as the covering and binding body on the roof. Thus a pure coal tar covering is obtained for the roof or other articles painted therewith.

Various changes may be made by those skilled in the art Without departing from the spirit of my invention as described and claimed.

I claim:

A roof paint consisting of the following ingredients in the pro ortions stated, by volume, coal tar twenty 20) parts, gasoline five (5) parts, and alcohol one (1) part.

In testimony whereof I have signed my name to this specification.

M. M. CONNOLLY. 

